scholarly journals Growth and survival of tilapia Oreochromis niloticus (Linnaeus, 1758) submitted to different temperatures during the process of sex reversal

2009 ◽  
Vol 33 (3) ◽  
pp. 895-902 ◽  
Author(s):  
Cristina Delarete Drummond ◽  
Luis David Solis Murgas ◽  
Bruno Vicentini
Keyword(s):  
Weight Gain ◽  
Growth Performance ◽  
Oreochromis Niloticus ◽  
Hormone Treatment ◽  
Sex Reversal ◽  
Fish Culture ◽  
Growth And Survival ◽  
Gain Rate ◽  
Different Temperatures ◽  
Weight Gain Rate

The objective of this research was to evaluate the sex reversal technique using 17α--methyltestosterone (MT) hormone, submitted to temperature modification of fry Nilo tilapia storage, aiming to get the data of sex reversal combined with growth performance and fry survival. The experiment was performed at UFLA Fish Culture Station, using tilapia fry (0,008 ± 0.002 g e 0,9 ± 0.1 cm) obeying a totally randomized experimental delineation in a factorial scheme 4x4, in 4 temperatures (26º, 28º, 30º, 32ºC) and 4 hormonal doses (0, 20, 40, 60mg of MT/kg of ration) during 28 days, with 5 repetitions. As temperature raised, weight gain rate, size and survival increased (p<0.01); however, this temperature raise was not effective in modifying males ratio (p>0.01), which occurred only due to the used hormone treatment. The dose of 40 mg of MT/kg of ration provided similar results to those of 60mg of MT/kg of ration. Hence, the temperature band from 26º to 32ºC does not affect sex reversal rate, but temperatures around 30ºC improves the performance of tilapias related to the growth and survival, and the dose of 40 mg of MT/kg of ration is enough to achieve monosex populations.

scholarly journals Growth and Survival of Nile Tilapia (Oreochromis niloticus, Linnaeus 1758) Fry Fed at Diffrerent Inclusion Levels of Wonderful Kola (Buchholzia coriacea) Seed Meal (BSM)

2019 ◽  
pp. 1-6
Author(s):  
F. Eze ◽  
F. E. Avwemoya
Keyword(s):  
Weight Gain ◽  
Survival Rate ◽  
Growth Performance ◽  
Oreochromis Niloticus ◽  
Seed Meal ◽  
Fish Diet ◽  
Growth And Survival ◽  
Randomized Design ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Negative Effect

The effect of different inclusion levels of wonderful kola (Buchholzia coriacea) seed meal (BSM) on growth performance and survival rate of Oreochromis niloticus fry was investigated. Five days old mixed sex of O. niloticus (0.1– 0.2 g weight and 0.45 mm length) were subjected to powdered B. coriacea seeds meal (BSM) at 0, 2, 4, 6, 8 and 10 g/kg twice daily for 1 month from April-May, 2015. It was conducted in an indoor experimental plastic basin of capacity 50 cm in diameter and 30 cm deep. 60 fry per duplicates with a total of 720 fry, six isonitrogeneous treatments and 2 duplicates per each treatment. A complete randomized design and 30% Crude Protein were used. The highest mean length, mean weight, specific growth rate and weight gain observed are 0.488 mm, 4.68 g, 0.85 and 4.65 g respectively. The highest of survival rate (100%) was recorded in fish fed with 6 g/ kg BSM. Treatment 1 having 0% BSM (control) had the lowest weight gain. In conclusion, the addition of 4 g/ kg of BSM in a fish diet, has no negative effect on the growth performance and survival of O. niloticus.

scholarly journals The Growth and Survival of Various Forms Androgen Sex - Reversal Oreochromis niloticus Cultured Using Hapas in Concrete Tank

2021 ◽  
Vol 5 (1) ◽  
pp. 1-5
Author(s):  
Omoike A ◽  
Keyword(s):  
Oreochromis Niloticus ◽  
Sex Reversal ◽  
Same Sex ◽  
Growth And Survival ◽  
Uniform Growth ◽  
Technological Means ◽  
Concrete Tank

The production of same sex Oreochromics niloticus to enhance better and uniform growth for Tilapia culture has called for technological means using sex-reversal hormones Methyl Testosterone (MT), this study will look into the percentage growth and survival of Oreochromics niloticus fry.

scholarly journals Factors associated with maternal weight gain rate throughout pregnancy in women with normal and excessive pre‐pregnancy weight (LB446)

2014 ◽  
Vol 28 (S1) ◽  
Author(s):  
Ana Beatriz Franco‐Sena ◽  
Fernanda Rebelo ◽  
Thatiana Pinto ◽  
Dayana Farias ◽  
Roberta Mendes ◽  
...  
Keyword(s):  
Weight Gain ◽  
Maternal Weight Gain ◽  
Maternal Weight ◽  
Factors Associated ◽  
Gain Rate ◽  
Pregnancy Weight ◽  
Weight Gain Rate

Research on 304,321,316Lect. Stainless Steel Corrosion under the Calcinating Gas Atmosphere of Ammonium Paramolybdate

2012 ◽  
Vol 602-604 ◽  
pp. 421-425 ◽  
Author(s):  
Chang Sen Luo ◽  
Hong Luo ◽  
Xi Yang He
Keyword(s):  
Stainless Steel ◽  
Weight Gain ◽  
Average Rate ◽  
Steel Corrosion ◽  
Corrosion Layer ◽  
Surface Phase ◽  
Phase Constituent ◽  
Gain Rate ◽  
Gas Atmosphere ◽  
Weight Gain Rate

In this paper, the corrosion behavior was researched which was happen on the 304,321,316Lect. stainless steel materials in the analogue situation of calcining gas atmosphere of ammonium paramolybdate.The oxidized etch which happened on the sample’s surface, phase constituent and element content of the fracture surface, was analyzed by the means of SEM、XRD.The results showed that the phases of Fe2(MoO4)3,MoO3,MoO2.5(OH)0.5,Cr2O3,Cr2Ti5O13, Fe2O3,Fe3O4 ect. are contained on the surfaces of the 304,316L, 321 samples which are calcined. There is an inside oxidized corrosion layer in 304 316L. The oxidizing film is damaged and the oxygen penetrates into the base to form an oxidized layer. A thin and compact oxidation film was formed between 321 corrosion layer and the alloy interface, which have prevented the base from further corrosion, under this experiment conditions, this steel belonged to the inoxidizability materials. The coating deficiency of 321 steel is shallow; the particles of oxidate is thin and without inner corrosion; the weight gain rate of oxidized etch is slow (average rate 5.2×10-2mg/ (cm2•h)), the weight gain is less and corrosion resistance is fine.

Examining the Effection of Second-and Third-trimester Rate of Gestational Weight Gain on Perinatal Outcomes Among Chinese Twin Gestations Based on the Provisional Guidelines: A Retrospective Cohort Study

2020 ◽  
Author(s):  
Li-hua Lin ◽  
Yi-lin Weng ◽  
Ying-ying Lin ◽  
Xiu-xian Huang ◽  
Yang Lin ◽  
...  
Keyword(s):  
Regression Analysis ◽  
Weight Gain ◽  
Gestational Weight Gain ◽  
Normal Weight ◽  
Premature Delivery ◽  
Third Trimester ◽  
Gestational Weight ◽  
Gain Rate ◽  
Twin Pregnancies ◽  
Weight Gain Rate

Abstract Background: This paper investigated how second and third trimester gestational weight gain relates toperinatal outcomes among normal weight women with twin pregnancies in Fujian, China. Methods: A retrospective study on the medical records of 931 normal weight twin pregant women was conducted in Fujian Maternity and Child Health Hospital from 2014 to 2018.The 2nd and 3rd trimester weekly weight gain rate were calculated and categorized women as gaining below, within, or above the 2009 Institute of Medicine (IOM) recommended rates . The association between trimester-specific weight gain rate and perinatal outcome was performed by traditional regression analysis among groups.Results:A total of 931 pregnant women and 1862 neonates were included for analysis. 25.9% ,19.8% and 54.3%% of women had less than, greater than and within the recommended rates of gain in the 2nd and 3rd trimester, respectively. Multivariate Logistic regression analysis showed that greater than recommended rates of weight gain in 2nd trimester decreased the risks of preeclampsia (adjusted OR:0.458,95% CI:0.255~0.824). Less than recommended rates of weight gain in 3rd trimester increased the risk of premature delivery（adjusted OR=1.926,95%CI:1.403~2.644）, gestational diabetes mellitus (adjusted OR = 2.052,95%CI:1.417~2.972), intrahepatic cholestasis syndrome (adjusted OR = 3.016,95%CI:1.057~8.606), premature rupture of the membrane (adjusted OR = 1.722,95%CI:1.180~2.512) and neonatal respiratory distress syndrome (adjusted OR = 5.135,95%CI:1.701~15.498) and decreased the risk of cesarean section (adjusted OR = 0.587,95%CI:0.385~0.893) .In addition, greater than recommended rates of weight gain in 3rd trimester was associated with increased risks in premature delivery (adjusted OR=1.818,95%CI:1.307~2.527), and gestational hypertension (adjusted OR=2.098,95%CI:1.018~4.324) as well as preeclampsia(adjusted OR:2.029, 95%CI:1.331~3.093). The stratified analysis of weight gain in 3rd trimester showed that there was no significant difference in the incidence of adverse pregnancy outcomes compared to weight gain rate groups in 2nd trimester.Conclusions: While this study showed gestational weight gain rate less than or greater than in 3rd trimester were associated with some adverse maternal and neonatal outcomes, further studies of prospective and multi-center researches are required to explore alternate ranges of gestational weight gain rate in twin pregnancies.

scholarly journals Detection of Artificially Water-Injected Frozen Octopus minor (Sasaki) Using Dielectric Properties

2019 ◽  
Vol 2019 ◽  
pp. 1-7 ◽  
Author(s):  
Dongyoung Lee ◽  
Sangdae Lee ◽  
Chang Joo Lee ◽  
Seung Hyun Lee
Keyword(s):  
Weight Gain ◽  
Dielectric Properties ◽  
Microwave Frequency ◽  
Nondestructive Method ◽  
Freezing Process ◽  
Gain Rate ◽  
Significant Difference ◽  
Great Possibility ◽  
Octopus Minor ◽  
Weight Gain Rate

A few importers of marine products have practiced the fraud of artificially injecting water into Octopus minor for increasing their weights prior to the freezing process. These rampant practices have recently become a serious social issue and threaten public health. Therefore, it is necessary to develop the detection method for artificially water-injected frozen Octopus minor. This study was conducted to develop the nondestructive method for verifying adulterated Octopus minor by measuring dielectric properties using the coaxial probe method. Regardless of weight and measurement locations, a significant difference between ε values from normal octopuses was not observed. The ε values of Octopus minor were decreased in the microwave frequency range between 500 and 3000 MHz. The ε values of water-injected octopuses also showed similar trend with normal octopuses; however, the dielectric loss factor (ε″) values of adulterated octopuses were much lower than normal octopuses. After thawing normal, adulterated, and imported frozen Octopus minor, the ε values measured at the trunk part from these octopuses were compared and statistically analyzed. The ε″ values from normal frozen octopus were significantly different from adulterated and imported frozen octopuses. In addition, the ε″ values from the adulterated frozen octopus group that weight gain rate was less than 20% was significantly different from other adulterated octopus groups with higher weight gain rate than 20%. The ε″ values from adulterated frozen octopus groups with the range of weight gain rate between 20 and 30% were quite similar to imported frozen octopuses. Therefore, it was found that the measurement of ε″ values from Octopus minor has a great possibility to distinguish normal frozen octopuses and artificially water-injected frozen octopuses.

scholarly journals Efficacy and suitability of whole wheat flour on the growth and survival of Rohu (Labeo rohita)

2019 ◽  
Vol 6 (2) ◽  
pp. 345-352
Author(s):  
Shovon Sarker ◽  
Md Fazle Rohani ◽  
Md Shafiqur Rahman ◽  
Md Sazzad Hossain
Keyword(s):  
Weight Gain ◽  
Survival Rate ◽  
Growth Performance ◽  
Wheat Flour ◽  
Labeo Rohita ◽  
Stocking Density ◽  
Quality Parameters ◽  
Whole Wheat Flour ◽  
Growth And Survival ◽  
Whole Wheat

The efficacy and suitability of dietary whole wheat flour supplementation was evaluated on the growth performance and survival of rohu (Labeo rohita). The study was conducted in 12 experimental aquaria at the Wet Laboratory, Department of Aquaculture, Bangladesh Agricultural University, Mymensingh. A total of 180 fingerlings of mean initial weight of 1.744±00 g were stocked at the same stocking density (268 fingerlings/m3). Four different treatments (T1, T2, T3 and T4) each with three replications were performed having different level of whole wheat flour such as 0% whole wheat flour (T1), 5% whole wheat flour (T2), 10% whole wheat flour (T3) and 15% whole wheat flour (T4). Feeds were supplied at 5% body weight twice daily in the morning at 9.00 am and in the afternoon at 5.00 pm throughout the study period. The rations were adjusted every week when new weights of the fish for various experimental aquariums were determined. At the end of the 63 days study period, the growth performance parameters such as mean final weight (g), weight gain (g), percent weight gain (%), specific growth rate (%/day) and the best feed utilization in terms of food conversion ratio were found highest at treatment 4 where fishes were fed with inclusion of 15% whole wheat flour and lowest was found at treatment 1 (fed with inclusion of 0% whole wheat flour). Water quality parameters were within the acceptable range and survival rate was found 100% in all treatment. Therefore, it can be concluded that treatment 4 (highest growth performance and survival rate of L. rohita with supplementation of 15% whole wheat flour containing diet) can be chosen by fish farmers for commercial culture of this species. Res. Agric., Livest. Fish.6(2): 345-352, August 2019

Research on the Multifunction Fabric Loaded with Nano-ZnO and β-Cyclodextrin

2011 ◽  
Vol 332-334 ◽  
pp. 1439-1442
Author(s):  
Chun Mei Wang ◽  
Jin Xin He
Keyword(s):  
Weight Gain ◽  
Photocatalytic Degradation ◽  
Cotton Fabric ◽  
Cotton Fabrics ◽  
Bacterial Activity ◽  
Raw Material ◽  
Nano Zno ◽  
Gain Rate ◽  
Weight Gain Rate

Nano-ZnO sol solution was prepared by using Zn(CH3COO)2•2H2O as raw material and β-cyclodextrin (β-CD) was added into the sol, then cotton fabric was treaded with the sol by pad-dry-cure technique. Moreover, the fixation fastness of the composite sol on the fabric was improved by adding the adhesives. Based on the tests of anti-UV, photocatalysis, antibacterial and weight gain rate after adsorbing essence, the results showed that the treated cotton fabrics added with β-CD had better adsorbability to essence, anti-bacterial activity, photocatalytic degradation to formaldehyde and excellent anti-UV property.

scholarly journals Dietary Effect of Corchorus olitorius Seeds on Growth Performance of Oreochromis niloticus Fingerlings

2021 ◽  
Vol 21 (3) ◽  
pp. 101-107
Author(s):  
Oluwafumilola Eunice Afe ◽  
Adekunle Ayokanmi Dada ◽  
Muhammed Lawal Salihu
Keyword(s):  
Weight Gain ◽  
Growth Performance ◽  
Oreochromis Niloticus ◽  
Conversion Ratio ◽  
Feed Additives ◽  
Feed Conversion Ratio ◽  
Haematological Parameters ◽  
Corchorus Olitorius ◽  
Feed Conversion ◽  
Cultured Fish

Incorporating feed additives in diets of cultured fish is aimed at improving growth performance, immunity and carcass quality. Growth performance and some haematological parameters of Oreochromis niloticus fingerlings fed varying inclusion levels of Corchorus olitorius seeds were assessed in the study. O. niloticus fingerlings of initial mean weight 9.35±0.01g were evaluated for a period of 56 days. Five experimental diets were formulated at varying inclusion levels; 0g/100g (control), 0.5g/100g, 1.0g/100g, 1.5g/100g and 2.0g/100g of C. olitoriusseeds. All diets were isonitrogenous with each treatment having triplicates. O. niloticus fingerlings fed 1.5g/100g diet of C. olitoriusrecorded the best growth performance in terms of weight gain, feed conversion ratio (FCR) and specific growth rate (SGR). There was a significant increase in growth and nutritional performance of O. niloticus fingerlings with increasing inclusion of C. olitorius seeds (P<0.05). Significant increase in packed cell volume, white blood cell and haemoglobin were observed in treated O. niloticus fingerlings and there was no adverse effect of C. olitorius seeds on the haematological parameters of the fish. The study showed that C. olitorius seed at 1.5g/100g significantly improved survival rate, weight gain and feed conversion ratio as well as reduced mortalities in the treated groups.

scholarly journals Comparing the metabolic fates of BALB/c mice maintained on cafeteria-style diets with differential nutritive values

2018 ◽  
Author(s):  
Muhammad Zaid ◽  
Fatima Ameer ◽  
Ayesha Ali ◽  
Zunaira Shoukat ◽  
Rida Rashid ◽  
...  
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Dietary Intervention ◽  
Body Weight Gain ◽  
Plasma Lipid ◽  
Chow Diet ◽  
Food Items ◽  
Gain Rate ◽  
Weight Gain Rate ◽  
Diet Model

AbstractCafeteria (CAF) diet-fed rodents are shown to provide a robust model of metabolic syndrome and human obesity. The carbohydrate/fat-rich food-items provided to the CAF-diet-model more closely approximate the ultra-processed human diet. However, most of the previous studies applied the commercially available rodent chow-diet for the comparative analyses and labeled it as a healthy-diet. The presented work aims to extend the knowledge on CAF-diet model by exposing the mice to human foods with different nutritional values. Our major goal was to study the metabolic fates of mice maintained on human food-items, which depending upon on their macronutrient compositions are categorized as healthy or unhealthy. BALB/c mice were randomly allocated to one of the three dietary intervention groups, standard chow diet; high-sugar/high-fat-cafeteria (HSHF-CAF) diet; or low-sugar/low-fat-cafeteria (LSLF-CAF) diet, for 5 weeks. The differences in multiple metabolic parameters (including food-/energy /macronutrient-intake, body-weight gain rate, organ-to-body weight ratios, plasma lipid profiles, adipocyte physiology, lipid deposition in metabolic tissues and ectopic fat storage in heart and kidney) were compared among the three intervention groups. We did not observe hyperphagia in mice maintained on CAF-diets. Nonetheless, the CAF-diet-fed mice displayed increased weight-gain-rate, adiposity, and adipocyte hypertrophy when compared to the chow-fed mice. However, the mice maintained on the two cafeteria-style diets displayed similar metabolic profiles, with HSHF-CAF-group displaying slightly higher weight-gain-rate. The HSHF-CAF-and LSLF-CAF-diet induced comparable adiposity in BALB/c mice. Further studies, with longer dietary intervention periods, are required to elucidate the effects of differential CAF-diets on the metabolic health of mice.

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